html{
    width: 100%;
    height: 100%;
    max-width: 750px;
    margin: 0 auto;
}
body{
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: url("../image/share.png") no-repeat;
    background-size: 100% 100%;
}
.main{
    width: 100%;
    height: 100%;
    position: relative;
}
.main .main_code{
    width: 22%;
    height: 13%;
    position: absolute;
    top: 37%;
    left: 39%;
    background: #e94a47;
    border-radius: 10px;
}
.main img{
    width: 80%;
    height: 80%;
    margin: 10%;
}
.title{
    position: absolute;
    width: 100%;
    text-align: center;
    top: 67%;
    left: 0;
}
button{
    position: absolute;
    width: 80%;
    height: 40px;
    background: #f1e835;
    color: #fff;
    outline: none;
    border: none;
    border-radius: 10px;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
}

.main .app_name{
    font-size: 20px;
    font-weight: 600;
    position: absolute;
    left: 50%;
    top: 69%;
    transform: translate(-50%,-50%);
}
.main .app_introduction{
    font-size: 14px;
    position: absolute;
    left: 50%;
    top: 76%;
    min-width: 200px;
    transform: translate(-50%,-50%);
}
.main .app_introduction_1{
     font-size: 14px;
     position: absolute;
     left: 50%;
     top: 79%;
     transform: translate(-50%,-50%);
 }
.main .app_introduction_2{
    font-size: 14px;
    position: absolute;
    left: 50%;
    top: 82%;
    transform: translate(-50%,-50%);
}
.main .name{
    position: absolute;
    bottom: 10px;
    right: 10px;
}